Expansion and Contraction: Approximately 5.9% radial, 7.2% tangential, and 12% volumetric. A 6” air-dried board will move an average of 1/16”. There is a small movement after milling as well.

Fire resistance: In Canada, the Tropical Pro decking board has passed the Intermittent Flame Test and The Spread of Flame Test for the CAN/ULC S107 equivalent of ANSI /UL 790 (Standard Methods of Fire Tests of Roof Coverings) and is rated Class A. This makes it suitable for a rooftop finishing material in non-combustible building class buildings, putting it in the same class as steel. In the U.S., Tropical Pro wood has been tested by the National Fire Protection Agency, which gave it the highest Flame spread classification: Up to Class A, Uniform Building Code, Class 1.

Termite resistance: Tropical Pro has received the highest rating from the U.S. Naval Research Laboratory.

Durability and longevity: Untreated Tropical Pro decking will last 40 years and more. If the deck is oiled or finished on all four sides before installation, it can last 70+ years.